K1017 :a^2 b c^3 x^2 y+a b^2 c^3 x^2 y+b^3 c^3 x^2 y-a^3 c^3 x y^2-a^2 b c^3 x y^2-a b^2 c^3 x y^2-a^2 b^3 c x^2 z-a b^3 c^2 x^2 z-b^3 c^3 x^2 z+a^3 b^2 c y^2 z+a^3 b c^2 y^2 z+a^3 c^3 y^2 z+a^3 b^3 x z^2+a^2 b^3 c x z^2+a b^3 c^2 x z^2-a^3 b^3 y z^2-a^3 b^2 c y z^2-a^3 b c^2 y z^2 = 0